Most sites are just listed as antenna upgrades so as to keep fees down and in most cases no permit is required because they are simply replacing like for like. This not only keeps pricing down, but speeds up processes with less paperwork/hoops to jump through
i've seen this a lot around here too with permits not being pulled. several years ago i could check permit reports and have an idea of when upgrades might be starting. i don't know if cities have just relaxed on tower permits or they don't record them anymore or if t-mobile just isn't following the "rules" when it comes to permits, but most of the B71 upgrades that have happened around here over the past year i haven't seen permits for.
Following up on myself, my wife and I ventured to Wegmans for the first time since March this morning. The T-Mobile rack at Hayfield now has a fourth antenna, that resembles (but is taller than) the Sprint Massive MIMO antenna on the rack below it. Guessing this is the n41 gear.
Oddly, I checked for permits, and there's only electrical permits, and no antenna replacement/addition permit. Not sure what to make of that.